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INTRODUCTION
REPA IR INSTRUCTION
COROLLA Supplement (RM1129E)
2. FOR VEHICLES EQUIPPED WITH SRS AIRBAG AND SEAT BELT PRETENSIONER
The COROLLA is equipped with a Supplemental Restraint System (SRS).
CAUTION:
Failure to carry out the service operations in the correct sequence could cause the SRS to unexpect -
edly deploy during servicing and lead to serious injury.
Furthermore, if a mistake is made when servicing the SRS, it is possible that the SRS may fail to oper -
ate properly. Before servicing (including removal or installation of parts, inspection or replacement),
be sure to read the following section carefully.
(a) GENERAL NOTICE
(1) As the malfunction symptoms of the SRS are difficult to c onfirm, the Diagnostic Trouble Codes
(DTCs) become the most important source of information when troubleshooting. When trouble -
shooting the SRS, always check the DTCs before disconnecting the battery
(2) Work must be started at least 90 seconds after the ignition switch is turned OFF and the negative
( -- ) terminal, cable is disconnected from the battery.
(The SRS is equipped with a back -- up power source. If work is s tarted within 90 seconds after
turning the ignition switch OFF and disconnecting the cable from the negative ( -- ) battery termi -
nal, the SRS may deploy).
When the disconnecting the cable from the negative ( -- ) battery terminal, clock and audio system
memory is erased. Before starting work, make a note of the settings of each memory system.
When work is finished, reset the clock and audio systems as before.
CAUTION:
Never use a backup power source (battery or other) to avoid erasing system memory. The backup
power source may inadvertently power the SRS and cause it to deploy.
(3) In minor collisions where the SRS does not deploy, the horn button assembly (see Pub. No.
, front passenger airbag assembly
(see Pub. No. RM925E, page 60 -- 27),
front seat airbag assembly
(see Pub. No. RM925E, page 60 -- 32)
, c urtain shield airbag assembly
(see Pub. No. RM1028E, page 60 -- 24)
and seat belt pretensioner should be inspected before
further use of the vehicle.
(4) Never use SRS parts from another vehicle. When replacing parts, use new parts.
(5) Before repairs, remove the airbag sensor assemblies if impacts are likely to be applied to the
sensor during repairs.
(6) Never disassemble and attempt to repair the airbag sensor assemblies, horn button assembly,
front passenger airbag assembly, curtain shield airbag assembly, front seat airbag assembly or
seat belt pretensioner.
(7) Replace the airbag sensor assemblies, horn button assembly, front passenger airbag assembly,
curtain shield airbag assembly or front seat airbag assembly or instrument panel lower airbag
assembly if: 1) damage has occurred from being dropped, or 2) cracks, dents or other defects
in the case, bracket or connector are present.
(8) Do not directly expose the airbag sensor assemblies, horn button assembly, front airbag assem-
bly, front seat airbag assembly, curtain shield airbag assembly or seat belt pretensioner to hot
air or flames.
(9) Use a v oltmeter/ohmmeter with high impedance (10 k
Ω
/V minimum) for troubleshooting electri -
cal circuits.
(10) Information labels are attached to the SRS components. Follow the instructions on the labels.
(11) After work on the SRS is c ompleted, check the SRS warning lamp
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E